Vietnam's SIGMA warship surprises the enemy

The news that Vietnam has ordered four SIGMA warships from the Netherlands has been widely reported by foreign media. The modern coast guard ships that were recently launched are also products of the Damen shipbuilding group in cooperation with Vietnam.

Battleship Sigma

With more than 3,200km of coastline, territorial waters and continental shelf of more than 1 million km2, protecting the sea is an extremely important strategic task of the Vietnam Navy, which is also an urgent need to develop the military shipbuilding industry.

The Dutch SIGMA ship model is a modular warship model that needs to be studied in modern shipbuilding technology. Cooperation in technology transfer, especially advanced defense technology from Western shipbuilding powers, is a very correct direction for Vietnam. This plan allows the reception of modern technology, while also creating conditions for the reception of modern military defense technology outside Russia, which can cause great surprise to potential enemies.

The basic basis of the Sigma patrol and escort ship class system is the hull designed into modules with its internal technical components. Sigma is a method of hull structure by integrating 3D spatial geometry modules. This is a completely new ship design method, it allows to increase the length as well as the capacity of Sigma ship to any limit. The Sigma code is calculated as the length of the ship's hull. From there, the technical and tactical features of the ship can be calculated. Sigma 9113 is a ship 91m long and 13m wide, SIGMA 10513 is a ship 105m long and 13m wide.

The hatchet-type hull design evolved from the high-speed, low-displacement hull design of MARIN Teknikk AS from the 1970s.

Tactical specifications of the corvette class:

Displacement: 1,692 tons. Length: 90.71 m (297.62 feet) Width: 13.02 m (42.72 feet) Waterline: 3.60 m (11.81 feet).

Hull dynamics:

- Two 2 x SEMT Pielstick 20PA6B STC engines for 8910 kW with light-duty steering power transmission system for each engine Geislinger BE 72/20/125N + BF 110/50/2H (steel and composite power transmission system)
- 4 x Caterpillar 3406C TA body source generators, capacity 350 kW each
- 1 x Caterpillar 3304B emergency generator 105 kW capacity
- 2 x propeller shafts with Rolls Royce Kamewa 5 bladed CP propellers

RENK ASL 94 Gearbox.

2 x Renk ASL94 gearboxes with single step gear and passive stabilizer gear hydraulics.

Speed:

Maximum: 28 knots (52 km/h)

Sea route: 18 nautical miles (33 km/h)

Cruising fuel economy: 14 knots (26 km/h)

Operating range:

At a cruising speed of 18 knots (33 km/h): 3,600 Nm (6,700 km)

Cruising speed 14 knots (26 km/h): 4,800 Nm (8,900 km)

Crew: 20, expandable to 80 including marines or special forces

Combat command system and radars serving ship operations:

Fire control system: Thales Group TACTICOS with four electronic control panels for gunners. Mk 3 2H.

Reconnaissance, search and target acquisition radar: MW08 3D phased array radar monitors, tracks and targets.

Target recognition device, distinguishing friend and foe: Thales TSB 2525 Mk XA (combined with MW08 reconnaissance radar)

Navigational Radar: Sperry Marine BridgeMasterE ARPA

Fire control radar: LIROD Mk 2 fire control, management and tracking radar.

Data Link: LINK Y Mk 2 datalink for communication and sharing of operational and management data.

Sonar: Passive and active medium frequency sonar mounted on the hull of the Thales UMS 4132 Kingklip ASW

Internal communications: Thales Communication's Fibre Optical Communications Network (FOCON) or EID's ICCS internal communications system enables internal ship communications and connection to external communications systems via the system's communications control panel

Satellite communication system: Nera F series system

Navigation and orbital navigation system. : Raytheon Anschutz electronic chart and compass integrated system.

Stealth camouflage and electronic warfare system: Imtech UniMACs 3000 Integrated Bridge System Electronic warfare and control of torpedo and missile decoys:

ESM: Thales DR3000
ECM: Racal Scorpion 2L

Decoy: TERMA SKWS, using 130mm DLT-12T launchers placed on both sides of the deck.

Weapons equipped:

Ship-to-air anti-aircraft missiles: 2 x MBDA Mistral TETRAL 4-round launchers, arranged forward and aft of the ship.

Anti-ship missiles: 4 x MBDA Exocet MM40 Block II

Ship's gun: Oto Melara 76 mm Bow

2 x 20 mm Denel Vektor G12 anti-aircraft guns (Lisence copy of GIAT M693/F2)

Torpedoes: Uses EuroTorp 3A 244S Mode II/MU 90 European standard torpedoes in two B515 twin launchers.

Air Force: Parking lot for combat or rescue helicopters flying at sea, with a helicopter shelter.

Indonesia has owned four Type 9113 frigates in service since 2009 and in August 2010 signed a contract to build a new frigate PKR 105 based on the SIGMA 10514 at PT PAL Shipyard in Indonesia.

Morocco currently operates two Sigma 9813 heavy escort vessels with VLS and one SIGMA 10513 frigate.

The advantages of the SIGMA ship model system in practice and advanced design structure. Once the modular shipbuilding technology is obtained, it is possible to continue to build new types of light ships based on the designed modules and integrate weapons and equipment produced from different countries.

Ship control section.

The bow of the ship.

Gunboat diagram.

Exocet NM40 anti-ship missile.

Launch anti-ship missiles.

According to Viettimes.vn